CN114751295A - Method for hoisting cluster type large-scale equipment of ethylene glycol synthesis device - Google Patents
Method for hoisting cluster type large-scale equipment of ethylene glycol synthesis device Download PDFInfo
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- CN114751295A CN114751295A CN202210192291.3A CN202210192291A CN114751295A CN 114751295 A CN114751295 A CN 114751295A CN 202210192291 A CN202210192291 A CN 202210192291A CN 114751295 A CN114751295 A CN 114751295A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/22—Rigid members, e.g. L-shaped members, with parts engaging the under surface of the loads; Crane hooks
- B66C1/34—Crane hooks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/04—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack
- B66C13/08—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for depositing loads in desired attitudes or positions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/18—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
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Abstract
The invention provides a method for hoisting cluster type large-scale equipment of an ethylene glycol synthesizer, which sequentially comprises the following steps: the method comprises the following steps of construction preparation, hoisting scheme formulation, hoisting machine rigging preparation, hoisting site treatment, equipment reaching hoisting conditions, crane station, tail sliding crane in place, equipment trial hoisting, formal hoisting, equipment in place and transfer next procedure. The invention is a direction developed at present and in the future by using a heavy crane to hoist large-scale equipment, and particularly has increasingly prominent advantages in large-scale hoisting engineering of a large-tonnage crawler crane.
Description
Technical Field
The invention relates to the technical field of hoisting, in particular to a method for hoisting cluster type large-scale equipment of an ethylene glycol synthesizer.
Background
The equipment of a certain ethylene glycol project is installed for a total of 355, wherein the equipment belongs to a large-scale equipment for a total16 stations, mainly concentrated in two devices and densely arranged. Wherein the external dimension of the light component removing tower
The total weight is 502.3 tons, wherein the height of the upper section is 31940mm, the weight is 187.3t, the height of the lower section is 48460mm, the weight is 315t, and additional tower pipelines are not hoisted together with the equipment. The external dimension phi 5800 x 78000 of the ethylene glycol product tower is total 375 tons, wherein the height of an upper section is 33625mm, the weight is 135t, the height of a lower section is 44375mm, and the weight is 240 t. External dimension of heat exchanger at inlet and outlet of hydrogenation reactor
The total weight is 110 t. Outline dimension of hydrogenation reactor
Total weight 235 t. Overall dimension of 1# methanol recovery tower
The total weight was 169.5 t. Overall dimension of methanol-water rectifying tower
The total weight was 110.6 t. Because the equipment is longer and higher, and the quality is very big, the security and the success rate that require extremely high to hoist.
Disclosure of Invention
In order to solve the problems, the invention discloses a method for hoisting cluster type large-scale equipment of an ethylene glycol synthesizer, which comprises the steps of prefabricating the large-scale equipment into two sections on site, assembling the large-scale equipment in the air, and completing hoisting operation by cranes with 260t crawler cranes, 450t crawler cranes and 800t crawler cranes.
The specific scheme is as follows:
the hoisting method of the cluster type large-scale equipment of the ethylene glycol synthesizer is characterized by sequentially comprising the following steps of: the method comprises the following steps of construction preparation, hoisting scheme formulation, hoisting machine rigging preparation, hoisting site treatment, equipment reaching hoisting conditions, crane station, tail sliding crane in place, equipment trial hoisting, formal hoisting, equipment in place and transfer next procedure.
As a further improvement of the invention, the hoisting scheme is customized to adopt a main and auxiliary crane hoisting method to hoist the vertical equipment, and specifically comprises the following steps: when the hoisting is started, the hoisted equipment is in a horizontal state, the main crane hoists the upper end of the equipment, the equipment is lifted continuously and can bear the whole hoisting load of the equipment, and the auxiliary crane lifts the tail end of the equipment forward continuously until the equipment is upright.
As a further improvement of the present invention, the hoisting conditions of the equipment specifically include: s1, preparing a safety plan, and putting safety measures in place; s2, the hoisting scheme is approved and the hoisting technology is met; s3, checking the hoisting rigging, the clamp ring and the balance beam; s4, the crane station meets the requirements of the hoisting scheme; s5, the basic strength of the equipment meets the installation requirement; s5, the equipment body reaches the hoisting condition; s6, the weather conditions on the day meet the hoisting requirements; s7, the hoisting site is processed, the ground endurance meets the requirement, and the obstacle is removed; s8 influences the treatment of the obstacle on the hoisted equipment, and the accessory needing to be carried is fixed.
As a further improvement of the invention, the hoisting site treatment comprises the requirements of ground endurance, the detection of ground endurance and the protection of underground engineering.
As a further improvement of the invention, the method also comprises hoisting reservation, and the turning reservation comprises a reservation principle and a reservation of an unloading site.
Wherein, the reservation principle is as follows: the influence on the installation construction is reduced as much as possible, a large operation area is required for the operation of a large hoisting machine, repeated pushing and knocking are carried out, and necessary reservation is made; according to the principle of from inside to outside and from bottom to top, providing reservation conditions for the foundation which has to be reserved and the installation; the hoisting construction scheme is optimized by coordinating and matching with an installation engineer; for equipment arranged in multiple layers, after the lower-layer equipment is hung, an upper-layer structure is required to be installed in time so as to facilitate the installation of the upper-layer equipment; the equipment installed on the steel structure frame requires the steel structure frame to be constructed in time so as to meet the requirement of hoisting of the part of equipment.
Reserving an unloading site: and positioning and paying off the unloading position and the crane station position before the equipment arrives on the site, and placing an equipment bracket. The placing position generally follows the position of the main lifting lug of the equipment close to one side of the foundation of the equipment. After unloading is completed, the equipment ladder platform and the tower-attached pipeline are installed, and preparation work before hoisting is completed.
As a further improvement of the invention, the basic setting of hoisting comprises balance beam setting, balance beam checking, rigging setting and rigging checking.
As a further improvement of the invention, the equipment test lifting appliance body comprises the following steps:
(1) after the vertical equipment is ready for hoisting, a command is issued by a hoisting command, a main crane hoists a main lifting lug at the upper part of the equipment, an auxiliary crane hoists a lifting lug at the tail part of the equipment, a cable rope control device is arranged, the main crane and the auxiliary crane hoist the equipment together, the equipment stops hoisting after being 100mm away from a saddle, all stressed parts of the equipment and the crane are inspected after the equipment and the crane are kept still for 15 minutes, the saddle support can be removed or the transport plate vehicle can be removed, and the formal hoisting of the equipment is started;
(2) after the horizontal equipment is ready for hoisting, the main crane is commanded to hoist the equipment, the cable wind ropes are arranged at two ends of the equipment, the main crane hoists the equipment, the equipment stops hoisting after being 100mm away from the ground, all stressed parts of the equipment and the crane are inspected after standing for 15 minutes, after all dangerous factors are eliminated, the steel support and the sleeper support can be removed or the transport plate vehicle is removed, and the formal hoisting of the equipment is started.
As a further improvement of the invention, the formal hoisting specifically comprises the following steps:
(1) after the test hoisting of the vertical equipment is finished, starting formal hoisting; when in formal hoisting, a command is issued by a hoisting command, the main crane slowly lifts the equipment, and the auxiliary crane is matched with the lifting until the equipment is upright; after the equipment is erected, the auxiliary crane is unhooked; the main crane drives the crane to a specified position, then lifts the equipment to a required height, finally lifts the equipment to the position above the installation position through a rotating rod, adjusts the position and the position of the equipment, falls the equipment, installs and fixes the equipment, removes a hoisting rigging and a cable wind rope, cleans the site, and finishes the equipment hoisting work.
(2) After the test hoisting of the horizontal equipment is finished, formal hoisting is started; and during formal hoisting, the main crane is commanded by a hoisting command to slowly lift the equipment, after the equipment is lifted to a proper height, the main crane drives the equipment to a specified position, then the equipment is lifted to a required height, finally the equipment is hoisted to the position above the installation position through a rotating rod, the position and the position of the equipment are adjusted, the equipment is dropped, the fixed equipment is installed, a hoisting rigging and a cable rope are removed, the site is cleaned, and the equipment hoisting operation is finished.
As a further improvement of the invention, the command in hoisting is as follows: when equipment is hoisted, a master commander and an auxiliary commander are arranged, the auxiliary commander is responsible for commanding the actions of the auxiliary cranes according to the instructions of the master commander, and the master commander is responsible for commanding the actions of the master crane and coordinating the actions of the master crane and the auxiliary cranes and participating in the hoisting operation personnel, so that the smooth operation of the hoisting operation of the whole equipment is ensured. The lifting command signal is mainly interphone, and the semaphore and whistle are auxiliary; the auxiliary command closely concerns the equipment condition in the equipment erecting process and the process of approaching the foundation, and the interphone timely informs the main command of the information to assist the main command in adjusting the crane action.
As a further improvement of the invention, the hoisting sequence is based on the integral construction condition of the site foundation, the hoisting is started by the synthesis device in the overall hoisting sequence, and the equipment hoisting is carried out along the appointed route after the construction is finished. The equipment hoisting sequence is based on the equipment arrival time and the foundation construction condition, and is uniformly and coordinately arranged according to the field plane arrangement.
The invention has the beneficial effects that:
the whole hoisting of the equipment and the structure which controls the time in space tends to be realized in a single-piece combined hoisting mode which controls the space in time in the past, and the hoisting of large-scale equipment by a heavy crane is the direction of development at present and in future, and particularly the advantages of a large-tonnage crawler crane in large-scale hoisting engineering are increasingly prominent.
Drawings
Fig. 1 is a schematic flow diagram of a lifting method of a main crane and an auxiliary crane in the invention, wherein a is a state when equipment is lifted, b is an equipment lifting diagram, c is a state when the auxiliary crane is unhooked in advance, and d is a state when the auxiliary crane is allowed to be upright and unhooked.
Fig. 2 is a schematic diagram of the stress of the balance beam.
Fig. 3 is a schematic diagram of a balance beam rigging arrangement.
FIG. 4 is a first diagram illustrating the calculation of the center of gravity of the device.
Fig. 5 is a schematic diagram of the calculation of the center of gravity of the device.
Detailed Description
The present invention will be further illustrated with reference to the accompanying drawings and detailed description, which will be understood as being illustrative only and not limiting in scope.
As shown in the figure, the hoisting method of the cluster type large-scale equipment of the ethylene glycol synthesizer sequentially comprises the following steps: construction preparation, hoisting scheme formulation, hoisting machine rigging preparation, hoisting site treatment, equipment reaching hoisting conditions, crane station position, tail slipping crane in place, equipment trial hoisting, formal hoisting, equipment in place, and transfer to next procedure.
In this embodiment, the hoisting scheme is customized to adopt a main and auxiliary crane hoisting method to hoist the vertical equipment, and specifically comprises: when the hoisting is started, the hoisted equipment is in a horizontal state, the main crane hoists the upper end of the equipment, the main crane can continuously lift the upper end of the equipment and bear the whole hoisting load of the equipment, and the auxiliary crane lifts the tail end of the equipment forward continuously until the equipment is upright.
In this embodiment, the hoisting conditions of the equipment specifically include: s1, preparing a safety plan, and putting safety measures in place; s2, the hoisting scheme is approved and the hoisting technology is met; s3, checking the hoisting rigging, the clamp ring and the balance beam; s4, the crane station meets the requirement of the hoisting scheme; s5, the basic strength of the equipment meets the installation requirement; s5, the equipment body reaches the hoisting condition; s6, the weather conditions on the day meet the hoisting requirements; s7, the hoisting site is processed, the ground endurance meets the requirement, and the obstacle is removed; s8, the treatment of the obstacles on the hoisted equipment is influenced, and the accessories needing to be carried are fixed.
In this embodiment, the treatment of the hoisting site includes the requirement of ground endurance, the detection of ground endurance and the protection of underground engineering.
Requirement for ground endurance
Taking the endurance capacity required by 800t cranes (XGC800) and 450t cranes (QUY450) when hoisting the lower section of the lightest equipment lightness-removing tower (C14304) as an example, the hoisting transition of other equipment is processed by referring to the endurance capacity. The imbalance coefficient was calculated as 1.3.
Endurance capacity required for 800t crane (creep XGC800)
(1) Endurance required during operation (transverse full-paved road base plate, calculated according to 4 road base plates, each block size 2.8m 6m)
Crane body weight g1 ═ 635 t; the support beam, rigging and weight g2 ═ 20.2 t; super lift weight g3 ═ 400; the weight g4 of the hook head is 12.8 t; equipment weight g 5-325 t; accessory weight g6 ═ 17.5 t; turntable weight g7 ═ 205 t; the weight g8 of the roadbed box is 7.5 t; the total weight is as follows: g-g 1+ g2+ g3+ g4+ g5+ g6+ g7+4 × g 8-1645.5 t; ground area of the circuit board: a 4 × 2.8 × 6 ═ 67.2m 2; the required endurance is N-1.3 × g/a-31.83 t/m 2; the required endurance is not less than 32t/m 2.
(2) Required ground endurance (track grounding) during no-load transition
The total weight is as follows: g1+ g 4-647.8 t; ground area: a 2 × 12 × 1.5 ═ 36m 2; the required endurance capacity is N1.3 g/A23.4 t/m2, and the required endurance capacity is not less than 24t/m 2; the 260t crane (QUY260) walking route is on the 450t crane (QUY450) and 800t crane (XGC800) walking route, and the foundation can also meet the requirement.
Comprehensively considered, the requirement of the ground endurance is divided into two cases of 32t/m2 and 24t/m 2. According to a geotechnical engineering investigation report of a 40-million-ton ethylene glycol project of comprehensively utilizing raw gas provided by a total package, the natural foundation bearing capacity characteristic value is 340Kpa, the engineering geological condition is good, and the requirement of hoisting operation is met. The actual measurement value on site is used as the standard.
Detection of ground endurance
According to a geological survey report, the existing site conditions are better, the bearing capacity of the foundation can reach 340KPa, and the ground is tamped by adopting a ground watering and road roller rolling mode because the local soil property is better. The soil endurance is detected by an original weight method (according to SH 3515-2017). The detection method comprises the following steps:
after tamping is finished, randomly selecting positions of three regions required by tamping
Secondly, using a 450T crawler crane counterweight (2.18 m in length and 1.8m in width and 10T/block) as a weight block to carry out weight method detection;
the placement principle is shown in the following table:
| serial number | Area of ground contact of weight/m2 | Weight basis weight/T | Number of weights | Experimental ground endurance T/m2 | Required endurance T/m2 |
| 1 | 3.924 | 10 | 13 | 33.12945974 | 34 |
| 2 | 3.924 | 10 | 11 | 28.03261978 | 28 |
| 3 | 3.924 | 10 | 9 | 22.93577982 | 22 |
| 4 | 3.924 | 10 | 8 | 20.38735984 | 20 |
Four points are uniformly selected above each weight block as measuring points for settlement recording, and marking is carried out;
fifthly, the weight blocks are kept stand for 24 hours, the sedimentation amount of 4 positions of the weight blocks is measured and recorded, and if the maximum sedimentation amount of four points is not more than 50mm, the treated foundation is qualified.
Protection of underground works
Underground works (pipelines, ditches, wells and the like) are reserved according to the suggestions of crane station positions, if protection is carried out after construction which cannot be reserved due to the engineering needs, the protection method comprises the following steps: the underground pipeline is protected by building brick walls or filling sand bags on two sides of the underground pipeline, wherein the height of the brick walls and the sand bags is 200-300 mm higher than the top height of the pipeline, and fine sand is filled above the pipeline. For a well, the pipe orifice in the well is first plugged, then backfilled with gravel and sand, and a substrate is paved above. And when the crane travels, the pit is recovered.
In this embodiment, still including the hoist and mount reservation, the transfer reservation includes reservation principle and the reservation of the place of unloading.
Wherein, the reservation principle is as follows: the influence on the installation construction is reduced as much as possible, a large operation area is required for the operation of a large hoisting machine, repeated pushing and knocking are carried out, and necessary reservation is made; according to the principle of from inside to outside and from bottom to top, providing reservation conditions for the foundation which has to be reserved and the installation; the hoisting construction scheme is optimized by coordinating and matching with an installation engineer; for equipment arranged in multiple layers, after the lower-layer equipment is hung, an upper-layer structure is required to be installed in time so as to facilitate the installation of the upper-layer equipment; the equipment installed on the steel structure frame requires the steel structure frame to be constructed in time so as to meet the requirement of hoisting of the part of equipment.
Reserving an unloading site: and positioning and paying off the unloading position and the crane station position before the equipment arrives on the site, and placing an equipment bracket. The placing position generally follows the position of the main lifting lug of the equipment close to one side of the equipment foundation. After unloading is completed, the equipment ladder platform and the tower-attached pipeline are installed, and preparation work before hoisting is completed.
In this embodiment, the basic setting of the hoisting includes equalizing beam setting, equalizing beam checking, rigging setting, and rigging checking.
Equalizing beam arrangement
1) And the balance beam is provided with finished equipment meeting the requirements by a hoisting company according to the field hoisting operation conditions, and a product quality certification is attached. The light component removal tower (C14304) adopts a 500-ton balance beam due to large weight and diameter, and the specific type of the balance beam is as follows.
500 ton level combination hanging beam, composite member: the end is 1.3 meters, the middle section is 1.2 meters, the middle section is 2 meters, the middle section is 0.3 meters, and the middle section is 1.4 meters. Main hoisting steel wire rope: 2 root, diameter
The structure is 6X 61-FC.
Balance beam check
Selecting 5 specifications (the lengths are 2900, 3800, 4100, 4300, 6300 and 7500 respectively), wherein a steel pipe used by the balance beam 1 is phi 530 x 20, and the length is 7500 mm; considering that the balance beam provides finished products for hoisting companies, the 500T-level (combined type) balance beam can be safely used only for checking the balance beam hoisting lightness-removing tower (C14304) in the lower section state (the maximum equipment dead weight/length). The balance beam can be safely used.
The lifting capacity of the balance beam is 500T (the lower section of C14304 of the lifted equipment is 365.3T, the weight of the heavy objects of the attached tower is included), the lifting requirement of the equipment in the scheme can be completely met, the length is calculated according to 7.5m, the included angle between the rigging and the balance beam is calculated according to 60 degrees, the included angle is larger than 60 degrees in the actual operation, and the safety is calculated. The balance beam steel pipe has the size phi 530 x 20, is made of 20# steel, and has the self weight g of 7.8T.
Balance beam stress analysis
G- -hoisting calculated weight in FIG. 2
G＝365.3t；
F1y＝G*1/2＝182.65T；
F1＝F1y，F1x＝0；F2＝F1＝182.65T；
F2x＝F2×cos60°＝91.33T；
F2y＝F2×sin60°＝158.18T；
F3y＝F1-F2y+g/2＝28.22T；
F3x＝F3y/tan60°＝16.29T；
F3＝F3y/sin60°＝32.59T
Capability of balance beam
Balance beam material: 20#, beam cross section: phi 530 x 20, length L7500 mm, horizontal force eccentricity is 40 mm.
Beam static moment of inertia: pi (D4-D4)/64-3.14 x (5304-4904)/64-1477173750 mm4
Flexural section coefficient of beam: omega-I/y-1477173750/(530/2) ═ 5574240.57mm3
Cross-sectional area of the beam: a ═ pi (D)2-d2)/4＝47100mm2
Radius of gyration of the beam: i-sqrt (I/a) ═ 177.09mm (sqrt is open square)
Length-to-thickness ratio of the beam: mu L/i 7200/177.09 40.66 (mu 1.0)
Looking up table to obtain stable coefficient psi-0.977 of axial compression member
Checking balance beam
The cross-section that the compensating beam crossed the upper ear plate axle center is dangerous cross-section, checks its intensity:
the included angle theta 1 between the lower part of the main rope and the beam is 90 degrees; the included angle theta 2 between the upper part of the main rope and the beam is 66 degrees; the included angle theta 3 between the auxiliary rope and the beam is 68 DEG
Bending moment generated by F1 and F2:
M1＝(F2y-F3y)×325×104＝422370000N·mm
bending moment generated by horizontal force eccentricity: m2 ═ (F3x + F2x) x 104 × 20 ═ 21524000N · mm
The beam dead weight bending moment M3 is g/2 (L/2-325) 122812500N mm
The bending stress is then: σ ═ 1.2 [ (M1+ M2+ M3)/ω + (F2x + F3x) × 104/(ψ a)]＝150.06N/mm2
The beam material is 20#, [ sigma ]]＝245/1.6＝153.125N/mm2
Sigma less [ sigma ] safety
Rigging arrangement
And a supporting balance beam is arranged when the vertical equipment is hoisted. The main hoisting steel wire rope is connected with the equipment lifting lug and the crane hook head through two sides of the balance beam; the compensating beam hangs on the hook head through the compensating beam wire rope, and two fag ends of wire rope knot respectively link to each other with the compensating beam through 1 snap ring. The detailed arrangement scheme is shown in a schematic diagram 3.
Rigging checking
The selected rigging and the safety factor are listed in detail in a rigging setting scheme table, and 2 main rope buckles of the balance beam are calculated by taking the hoisting rigging used at the lower section (325t) of C14304 with the largest weight as an example
6 × 61+ FC-1670 pressed ropes, 2 strands each, 4 strands in total, and 7935.84KN breaking force of each strand.
As a further improvement of the invention, the main and auxiliary cranes are arranged to determine the stress condition of the main and auxiliary cranes according to the equipment gravity center calculation, and select a proper rigging, as shown in FIGS. 4 and 5, the calculation formula is as follows: g × L2 ═ F1 (L1+ L2); g × L1 ═ F2 (L1+ L2).
In this embodiment, the device test lifting tool body includes the following steps:
(1) after the vertical equipment is ready for hoisting, a command is issued by a hoisting command, a main lifting lug at the upper part of the equipment is hoisted by a main crane, a lifting lug at the tail part of the equipment is hoisted by an auxiliary crane, cable rope control equipment is arranged, the equipment is hoisted by the main crane and the auxiliary crane together, the equipment stops being hoisted after being 100mm away from a saddle, all stress parts of the equipment and the cranes are inspected after the equipment and the cranes stand for 15 minutes, and the saddle support can be removed or the transportation plate vehicle can be removed before any problem is found, and the formal hoisting of the equipment is started;
(2) after the horizontal equipment is ready for hoisting, the main crane is commanded to hoist the equipment, the cable wind ropes are arranged at two ends of the equipment, the main crane hoists the equipment, the equipment stops hoisting after being 100mm away from the ground, all stressed parts of the equipment and the crane are inspected after standing for 15 minutes, after all dangerous factors are eliminated, the steel support and the sleeper support can be removed or the transport plate vehicle is removed, and the formal hoisting of the equipment is started.
In this embodiment, the formal hoisting specifically includes the following steps:
(1) after the test hoisting of the vertical equipment is finished, starting formal hoisting; when in formal hoisting, the main crane is commanded by a hoisting command to slowly lift the equipment, and the auxiliary crane is matched with the equipment in a follow-up lifting manner until the equipment is upright; after the equipment is erected, the auxiliary crane is unhooked; the main crane drives the crane to a specified position, then lifts the equipment to a required height, finally lifts the equipment to the position above the installation position through a rotating rod, adjusts the position and the position of the equipment, falls the equipment, installs and fixes the equipment, removes a hoisting rigging and a cable wind rope, cleans the site, and finishes the equipment hoisting work.
(2) After the test hoisting of the horizontal equipment is finished, beginning formal hoisting; and during formal hoisting, the main crane is commanded by a hoisting command to slowly lift the equipment, after the equipment is lifted to a proper height, the main crane drives the equipment to a specified position, then the equipment is lifted to a required height, finally the equipment is hoisted to the position above the installation position through a rotating rod, the position and the position of the equipment are adjusted, the equipment is dropped, the fixed equipment is installed, a hoisting rigging and a cable rope are removed, the site is cleaned, and the equipment hoisting operation is finished.
In this embodiment, the guidance in hoisting is as follows: when equipment is hoisted, a master commander and an auxiliary commander are arranged, the auxiliary commander is responsible for commanding the actions of the auxiliary cranes according to the instructions of the master commander, and the master commander is responsible for commanding the actions of the master crane and coordinating the actions of the master crane and the auxiliary cranes and participating in the hoisting operation personnel, so that the smooth operation of the hoisting operation of the whole equipment is ensured. The lifting command signal is mainly interphone, and the semaphore and whistle are auxiliary; the auxiliary command closely concerns the equipment condition in the equipment erecting process and the process of approaching the foundation, and the interphone timely informs the main command of the information to assist the main command in adjusting the crane action.
In this embodiment, the hoisting sequence is based on the overall construction condition of the site foundation, the hoisting is started by the synthesis device in the overall hoisting sequence, and the equipment is hoisted after the construction is completed and the transition is performed along the specified route. The equipment hoisting sequence is based on the equipment arrival time and the foundation construction condition, and is uniformly and coordinately arranged according to the field plane arrangement.
The technical means disclosed in the invention scheme are not limited to the technical means disclosed in the above embodiments, but also include the technical scheme formed by any combination of the above technical features. It should be noted that modifications and adaptations can be made by those skilled in the art without departing from the principles of the present invention and are intended to be within the scope of the present invention.
Claims (9)
1. The hoisting method of the cluster type large-scale equipment of the ethylene glycol synthesizer is characterized by sequentially comprising the following steps of: the method comprises the following steps of construction preparation, hoisting scheme formulation, hoisting machine rigging preparation, hoisting site treatment, equipment reaching hoisting conditions, crane station, tail sliding crane in place, equipment trial hoisting, formal hoisting, equipment in place and transfer next procedure.
2. The method for hoisting the cluster type large-scale equipment of the ethylene glycol synthesis device according to claim 1, wherein the hoisting scheme is customized to hoist the vertical equipment by adopting a main and auxiliary crane hoisting method, and specifically comprises the following steps: when the hoisting is started, the hoisted equipment is in a horizontal state, the main crane hoists the upper end of the equipment, the equipment is lifted continuously and can bear the whole hoisting load of the equipment, and the auxiliary crane lifts the tail end of the equipment forward continuously until the equipment is upright.
3. The hoisting method of the large-scale cluster equipment of the ethylene glycol synthesis device according to claim 2, wherein the hoisting conditions of the equipment specifically include: s1, preparing a safety plan, and putting safety measures in place; s2, the hoisting scheme is approved and the hoisting technology is met; s3, checking the hoisting rigging, the clamp ring and the balance beam; s4, the crane station meets the requirement of the hoisting scheme; s5, the basic strength of the equipment meets the installation requirement; s5, the device body reaches the hoisting condition; s6, the weather conditions in the day meet the hoisting requirements; s7, the hoisting site is processed, the ground endurance meets the requirement, and the obstacle is removed; s8 influences the treatment of the obstacle on the hoisted equipment, and the accessory needing to be carried is fixed.
4. The method for hoisting the large-scale cluster equipment of the ethylene glycol synthesis device according to claim 1, wherein the hoisting site treatment comprises a ground endurance requirement, a ground endurance detection and protection of underground engineering.
5. The method for hoisting the large-scale equipment clustered by the ethylene glycol synthesizer according to claim 1, further comprising a hoisting reservation, wherein the turning reservation comprises a reservation principle and a parking lot reservation.
6. The method for hoisting the cluster type large-scale equipment of the ethylene glycol synthesis device according to claim 2, wherein the basic settings of hoisting comprise balance beam setting, balance beam checking, rigging setting and rigging checking.
7. The method for hoisting the large-scale cluster equipment of the ethylene glycol synthesis device according to claim 2, wherein the main crane and the auxiliary crane are arranged to determine the stress conditions of the main crane and the auxiliary crane according to the calculation of the center of gravity of the equipment, and to select a proper rigging.
8. The method for hoisting the large-scale cluster equipment of the ethylene glycol synthesis device according to claim 1, wherein the equipment test hoisting tool comprises the following steps:
(1) after the vertical equipment is ready for hoisting, a command is issued by a hoisting command, a main crane hoists a main lifting lug at the upper part of the equipment, an auxiliary crane hoists a lifting lug at the tail part of the equipment, a cable rope control device is arranged, the main crane and the auxiliary crane hoist the equipment together, the equipment stops hoisting after being 100mm away from a saddle, all stressed parts of the equipment and the crane are inspected after the equipment and the crane are kept still for 15 minutes, the saddle support can be removed or the transport plate vehicle can be removed, and the formal hoisting of the equipment is started;
(2) after the horizontal equipment is ready for hoisting, ordering by a hoisting command, hoisting the equipment by a main crane, arranging cable ropes at two ends of the equipment, hoisting the equipment by the main crane, stopping hoisting after the equipment is 100mm away from the ground, standing for 15 minutes, checking all stress parts of the equipment and the crane, removing a steel support and a sleeper support or withdrawing a transport plate car after all dangerous factors are eliminated, and starting formal hoisting of the equipment.
9. The method for hoisting the cluster type large-scale equipment of the ethylene glycol synthesis device according to claim 1, wherein the formal hoisting specifically comprises the following steps:
(1) after the test hoisting of the vertical equipment is finished, starting formal hoisting; when in formal hoisting, the main crane is commanded by a hoisting command to slowly lift the equipment, and the auxiliary crane is matched with the equipment in a follow-up lifting manner until the equipment is upright; after the equipment is erected, the auxiliary crane is unhooked; the main crane drives the crane to a specified position, then lifts the equipment to a required height, finally lifts the equipment above the installation position through a rotating rod, adjusts the position and the position of the equipment, falls the equipment, installs and fixes the equipment, removes a hoisting rigging and a cable wind rope, cleans the site and finishes the hoisting work of the equipment;
(2) after the test hoisting of the horizontal equipment is finished, beginning formal hoisting; and during formal hoisting, the main crane is commanded by a hoisting command to slowly lift the equipment, after the equipment is lifted to a proper height, the main crane drives the equipment to a specified position, then the equipment is lifted to a required height, finally the equipment is hoisted to the position above the installation position through a rotating rod, the position and the position of the equipment are adjusted, the equipment is dropped, the fixed equipment is installed, a hoisting rigging and a cable rope are removed, the site is cleaned, and the equipment hoisting operation is finished.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210192291.3A CN114751295A (en) | 2022-02-28 | 2022-02-28 | Method for hoisting cluster type large-scale equipment of ethylene glycol synthesis device |
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| CN202210192291.3A CN114751295A (en) | 2022-02-28 | 2022-02-28 | Method for hoisting cluster type large-scale equipment of ethylene glycol synthesis device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114988309A (en) * | 2022-08-05 | 2022-09-02 | 中化二建集团有限公司 | Installation and construction method of chlorination reaction kettle enamel equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114988309A (en) * | 2022-08-05 | 2022-09-02 | 中化二建集团有限公司 | Installation and construction method of chlorination reaction kettle enamel equipment |
| CN114988309B (en) * | 2022-08-05 | 2022-10-25 | 中化二建集团有限公司 | Installation and construction method of chlorination reaction kettle enamel equipment |
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